Institute Newton C. Braga

Circuit Bench

Infrared Shooting Gun (CB18793E)
This electronic game was found in a 1996 documentation, but it can be easily assembled today, both...
RIAA Preamplifier (CB12172E)
This circuit makes the RIAA equalization of signals obtained from a record player for recovery in other...
Hearing Aid Amplifier (CB15116E)
This circuit is from a 1973 documentation, using germanium transistors common at the time. The...